---
page_title: trimprefix - Functions - Configuration Language
description: |-
  The trimprefix function removes the specified prefix from the start of a
  given string.
---

# `trimprefix` Function

`trimprefix` removes the specified prefix from the start of the given string, but only once. If the string does not begin with the prefix, the original string is returned unchanged.

## Examples

```
> trimprefix("helloworld", "hello")
world
```

```
> trimprefix("helloworld", "cat")
helloworld
```

```
> trimprefix("--hello", "-")
-hello
```

## Related Functions

* [`trim`](/terraform/language/functions/trim) removes characters at the start and end of a string.
* [`trimsuffix`](/terraform/language/functions/trimsuffix) removes a word from the end of a string.
* [`trimspace`](/terraform/language/functions/trimspace) removes all types of whitespace from
  both the start and the end of a string.
